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ATMEGA64A-MU
+BOMIC MCU 8BIT 64KB FLASH 64QFN
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ManufacturerMicrochip Technology
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Mfr. Part #ATMEGA64A-MU
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Datasheet ATMEGA64A-MU DataSheet
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Package VQFN-64
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In Stock3629
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Specifications
| Attribute | Value |
| Package | Tray |
| Series | AVR® ATmega |
| ProductStatus | Active |
| CoreProcessor | AVR |
| CoreSize | 8-Bit |
| Speed | 16MHz |
| Connectivity | I²C, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| NumberofI/O | 53 |
| ProgramMemorySize | 64KB (32K x 16) |
| ProgramMemoryType | FLASH |
| EEPROMSize | 2K x 8 |
| RAMSize | 4K x 8 |
| Voltage-Supply(Vcc/Vdd) | 2.7V ~ 5.5V |
| DataConverters | A/D 8x10b |
| OscillatorType | Internal |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 64-VFQFN Exposed Pad |
Overview
Description
Key specifications:
- Clock speed: Up to 16MHz
- I/O Pins: 53 programmable pins
- Peripherals: USART, SPI, I²C, ADC (8-channel 10-bit), PWM, timers
- Package: 64-pad QFN (7x7mm)
The -MU suffix denotes the QFN package, optimized for compact designs. It operates at 1.8–5.5V, supporting low-power modes for energy-efficient applications.
Common uses include industrial control, automation, and consumer electronics. Its balance of performance, peripherals, and cost makes it a versatile choice for mid-range projects.
For detailed specs, refer to the ATmega64A datasheet.
Equivalent
- ATMEGA64A-AU (TQFP-64, industrial temp range)
- ATMEGA64-16AU (older version, 16MHz)
- ATMEGA128A-MU (higher flash, same pinout)
- ATMEGA64L-8AU (low-voltage variant)
- ATMEGA64M1 (automotive-focused, differs in peripherals).
Alternatives from other brands:
- STM32F103C8T6 (ARM Cortex-M3, different architecture)
- PIC18F4550 (Microchip, similar specs).
Check pin compatibility and features before substitution.
Features
- 64KB Flash, 2KB EEPROM, and 4KB SRAM
- Up to 16MHz operating frequency
- 53 I/O Pins (4 ports) with programmable pull-ups
- 4 PWM Channels, 8 ADC Channels (10-bit)
- USART, SPI, I²C for serial communication
- JTAG & ISP for programming/debugging
- 4 Timers (2x 8-bit, 2x 16-bit)
- On-chip analog comparator
- Low-power modes (Idle, Power-down, etc.)
- 2.7V–5.5V operating voltage
- 64-lead QFN (MU) package
Suitable for embedded control, industrial, and consumer applications.
Pinout
- I/O Ports: 53 programmable I/O pins (PORTA–PORTG).
- Communication: USART, SPI, and TWI (I²C) interfaces.
- Timers: Four 8-bit timers and two 16-bit timers with PWM.
- ADC: 8-channel 10-bit ADC.
- Memory: 64KB Flash, 2KB EEPROM, 4KB SRAM.
- JTAG: Supports on-chip debugging.
- External Interrupts: 8 external interrupt sources.
Pins include power (VCC, GND), crystal oscillator (XTAL1/2), reset (RESET), and analog reference (AREF). The QFN-64 package is compact (9x9mm) and surface-mountable.
Application
- Industrial Control: Automation, motor control, and sensor interfacing.
- Consumer Electronics: Home appliances, smart devices, and gaming peripherals.
- Automotive: Dashboard controls, lighting systems, and basic ECU functions.
- Communication: Modems, routers, and serial communication modules.
- Medical Devices: Portable diagnostic equipment and monitoring systems.
- Robotics: Small-scale robotic controllers and servo management.
Its 64KB Flash, 4KB RAM, and versatile peripherals (UART, SPI, ADC) make it suitable for cost-sensitive, low-power embedded designs.
